16368631 has 4 divisors (see below), whose sum is σ = 16412200. Its totient is φ = 16325064.

The previous prime is 16368619. The next prime is 16368659. The reversal of 16368631 is 13686361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13686361 = 13 ⋅1052797.

It is a cyclic number.

It is not a de Polignac number, because 16368631 - 2⁷ = 16368503 is a prime.

It is a super-2 number, since 2×16368631² = 535864161628322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16368601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21216 + ... + 21973.

It is an arithmetic number, because the mean of its divisors is an integer number (4103050).

Almost surely, 2^16368631 is an apocalyptic number.

16368631 is a deficient number, since it is larger than the sum of its proper divisors (43569).

16368631 is an equidigital number, since it uses as much as digits as its factorization.

16368631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43568.

The product of its digits is 15552, while the sum is 34.

The square root of 16368631 is about 4045.8164812557. The cubic root of 16368631 is about 253.9047269113.

The spelling of 16368631 in words is "sixteen million, three hundred sixty-eight thousand, six hundred thirty-one".